CN103102006A - Efficient micropore aeration reactor for sewage treatment - Google Patents
Efficient micropore aeration reactor for sewage treatment Download PDFInfo
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- CN103102006A CN103102006A CN2013100359128A CN201310035912A CN103102006A CN 103102006 A CN103102006 A CN 103102006A CN 2013100359128 A CN2013100359128 A CN 2013100359128A CN 201310035912 A CN201310035912 A CN 201310035912A CN 103102006 A CN103102006 A CN 103102006A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention relates to an efficient micropore aeration reactor for sewage treatment, belonging to the field of sewage treatment equipment. According to the efficient micropore aeration reactor, a reaction box body of the micropore aeration reactor is longitudinally separated into a plurality of identical reaction units by separation boards, a communicating hole is correspondingly formed in the upper part of each separation board, and a closing piston is arranged at the opening in the top of each reaction unit; a spray pipe, a plug flow pipe and a micropore aeration pipe are respectively arranged in each reaction unit, the bottoms of the spray pipe and the plug flow pipe are respectively connected with a circulating water header pipe through valves; each reaction unit is communicated with the circulating water header pipe through the center of a base plate; and each micropore aeration pipe is respectively communicated with a gas transmission header pipe through gas transmission main pipes. The efficient micropore aeration reactor is controlled through the relevant reaction units to respectively work in different modes, namely main aeration and water circulation, and is controlled to work in an alternative changing manner, so that the transmission quantity of oxygen in the reactor is increased, the distribution uniformity of dissolved oxygen in a water body is improved, the use ratio of the oxygen during micropore aeration and the sewage treatment efficiency are improved, and the energy consumption during sewage treatment is effectively reduced.
Description
Technical field
A kind of efficient micro-pore aeration reactor for sewage disposal of the present invention belongs to the sewage disposal device field.
Background technology
Municipal sewage plant's energy consumption is excessive at present, and the too high problem of running cost becomes increasingly conspicuous, and has become the principal element that restricts sewage work's operation.Studies show that the energy consumption of municipal wastewater treatment plant more than 80% all concentrates in aeration reactor essential in sewage treatment process, the efficient that improves aeration reactor is the key that sewage work realizes the efficient low-consume operation.Common aeration reactor mainly is divided into two large classes: blast aeration reactor, mechanical aeration reactor.Micro-pore aeration reactor in the blast aeration reactor is relatively high because of its aeration efficient, and energy consumption is relatively low, and adaptability is stronger, is most widely used.
Existing micro-pore aeration reactor is top open type reactor, it blasts pressurized air by air compressor machine, the air-diffuser (be generally micropore aeration pipe) of these air through being arranged on reactor bottom forms a large amount of microbubbles, these microbubbles break rapidly increase to the water surface in the reactor water body after, and the oxygen transfer in this process in microbubble is in water body.Often there is following subject matter in this class reactor in actual motion: (1) microbubble lift velocity is too fast, and mass-transfer efficiency is not high.microbubble in the micro-pore aeration reactor is the forced air bubble, interior pressure is larger, because the micro-pore aeration reactor head is opened wide, be atmospheric air above its water surface, the pressure of this air is delivered in water body by the reactor water surface and acts on the surperficial mineralization pressure of the microbubble of doing the straight line upward movement in water body, this pressure is the resistance of this microbubble upward movement, but because of this this drag effect of not die of atmospheric pressure less, therefore these microbubbles lift velocity in reactor is fast especially, therefore the duration of contact of itself and water body is short especially, the amount that oxygen in microbubble is delivered in water body is also less, mass transfer effect is bad, (2) microbubble is taken a large amount of oxygen and is overflowed the water surface, and its oxygen is underutilized.Open wide because of the micro-pore aeration reactor head, microbubble namely breaks after overflowing the water surface, still have a large amount of oxygen not transfer in water body and be directly released in air in these microbubbles that break, so the oxygen in microbubble is underutilized; (3) after aeration in water body the dissolved oxygen lateral distribution uneven.After overflowing, microbubble does the straight line upward movement in water body from air-diffuser, there is certain spacing between each microbubble movement locus, this causes higher apart from the content of dissolved oxygen in the nearer water body of microbubble, otherwise lower, therefore the dissolved oxygen in the reactor water body is skewness in the horizontal, affects treatment effect; (4) the vertical skewness of dissolved oxygen in water body after aeration.Because making its oxygen amount that contains, the gas-liquid mass transfer effect constantly reduces in the microbubble uphill process, so both sides, the interface oxygen concentration gradient that microbubble contacts with water also constantly reduces, according to Fick mass transfer law, oxygen transfer speed also constantly reduces, therefore to be delivered to the amount of the dissolved oxygen in water body also fewer for the depth of water more shallow place microbubble, therefore the dissolved oxygen content in the more shallow place of depth of water water body is lower, i.e. the vertical skewness of dissolved oxygen in water body.
Summary of the invention
A kind of efficient micro-pore aeration reactor for sewage disposal of the present invention, to reduce the lift velocity of microbubble in the reactor water body, extend the duration of contact of microbubble and water body, increase the transmission capacity of microbubble oxygen in the reactor water body, improve dissolved oxygen horizontal stroke, vertical homogeneity that distributes in water body in the aeration post-reactor, thereby the utilization ratio of oxygen and reactor sewage treating efficiency in the raising micro-pore aeration effectively reduce the energy consumption of sewage disposal.
The present invention is used for the efficient micro-pore aeration reactor of sewage disposal, comprise reaction casing, piston, hydraulic drive mechanism, circulating water piping, aeration piping and Controlling System, characteristics are: circulating water piping is comprised of circulating water main, recirculated water main, spray header, plug-flow water pipe; The aeration piping is comprised of gas transmission main, gas transmission main and micropore aeration pipe; The reaction casing vertically cuts off by dividing plate and is a plurality of equal reaction members, and each reaction member open top is furnished with closed piston, has in each reaction member dividing plate top correspondence to be communicated with the aperture; In each reaction member, be vertically installed with respectively a spray header and two plug-flow water pipes, be horizontally disposed with a micropore aeration pipe, spray header is connected the bottom and is connected with circulating water main by valve respectively with the plug-flow water pipe; Each reaction member is communicated with circulating water main through reaction box extracorporeal circulation water conduit tube by base plate center connecting hole; Each micropore aeration pipe is communicated with gas transmission main by the gas transmission main respectively; Described reaction member has main aeration and two kinds of operational modes of water cycle, rise in the first reaction member, each alternate reaction member and each adjacent reaction member move with different mode simultaneously by main aeration or water cycle respectively, and the controlled checker that carries out simultaneously between main aeration and these two kinds of different modes of water cycle moves.
The closed piston of each reaction member open top is connected with hydraulic drive mechanism respectively.
Origin or beginning, the end of described circulating water main are respectively equipped with valve.
Circulating water main pipeline section between described adjacent reaction unit plug-flow water pipe is provided with valve.
There is level on described plug-flow water pipe top to tubaeform water outlet is set.
The tubaeform water outlet on described plug-flow water pipe top is communicated with the bottom, aperture higher than dividing plate, lower than this top, aperture.
Described spray header top is the spray transverse tube that is provided with spray apertures.
The spray transverse tube on described spray header top is communicated with the top, aperture higher than dividing plate, lower than piston base.
Described each reaction member micropore aeration pipe is fixed in each reaction member base plate by support, and the corresponding gas transmission main that connects of each micropore aeration pipe is connected with gas transmission main through valve.
In the invention described above reactor, be in the reaction member of main aeration pattern and carrying out simultaneously micro-pore aeration and plug-flow process, be in the reaction member of water cycle pattern and carrying out simultaneously tail gas aeration and water cycle process.be in the water body of plug-flow process of each reaction member of main aeration pattern successively through the recirculated water main, circulating water main, tubaeform water outlet end ejection by plug-flow water pipe top after the plug-flow water pipe forms plug-flow, and its micro-pore aeration process Air is blasted by air compressor machine and successively through gas transmission main, extruding a large amount of microbubbles of formation from the micropore aeration pipe micropore after the gas transmission main enters this reaction member water body, closed piston compresses the above air of this reaction member water surface with the lift velocity of restriction microbubble in water body simultaneously, because being subjected to this pressurized air and above-mentioned plug-flow effect, the tail gas of microbubble rises to and is communicated with the aperture from dividing plate behind this reaction member top and enters into the adjacent reaction unit water body that is in the water cycle pattern and carrying out therewith iterative cycles, in this process, this reaction member water body is carried out the tail gas aeration.In this reaction member water cycle process, the reaction member water body is successively through the spray transverse tube on recirculated water main, circulating water main, spray header and top thereof, be circulated back in each reaction member, this water cycle process repeatedly carries out until this reaction member operational mode conversion.
The present invention will react casing by dividing plate and be divided into a plurality of equal reaction members, and adopt respectively each reaction member of piston closes top, and adopt hydraulic drive mechanism to drive to realize air pressurized to more than the reaction member water surface to piston, and then the lift velocity of microbubble in water body in the limited reactions unit, thereby extend the residence time of microbubble in water body, increase gas-liquid mass transfer time and mass transfer amount, improve mass-transfer efficiency.combined action by plug-flow and water cycle simultaneously, namely enter into the adjacent reaction unit that is in the water cycle pattern and together carry out iterative cycles with its water body after making microbubble in the reaction member water body that is in main aeration pattern rise to the reaction member top, in this working cycle, microbubble fully contacts with circulating water body, liquid-gas interface mass transfer and turbulent fluctuation effect of mass transmitting significantly increase, the oxygen transfer amount also significantly increases, the dissolved oxygen that is delivered to simultaneously in water body is horizontal at water body, all distribute vertically comparatively even, the service area of the aeration tube of each reaction member unit's pipe range also significantly increases, therefore can reduce the layout density of micropore aeration pipe in reactor, thereby reduce tubing amount and cost of investment.In addition, moving under main aeration pattern and water cycle pattern of this reactor correlated response units alternately, make the microbubble that mutually utilizes micro-pore aeration between reaction member fully, realized the maximization that microbubble is worth, effectively reduce the energy that consumes because of aeration, therefore the also corresponding reduction of the running cost of this reactor.Therefore, the efficient micro-pore aeration reactor of the present invention has been realized the efficient low-consume operation than traditional micro-pore aeration reactor, has reduced simultaneously construction and working cost.
Description of drawings
The efficient micro-pore aeration reactor of Fig. 1 the present invention schematic diagram
The efficient micro-pore aeration reactor A of Fig. 2 the present invention-A sectional view
Embodiment
Now take the efficient micro-pore aeration reactor that contains four reaction members as example, further illustrate by reference to the accompanying drawings the present invention and how to implement:
(1) structure of reactor of the present invention:
The present invention is used for the efficient micro-pore aeration reactor of sewage disposal, comprises reaction casing, piston, hydraulic drive mechanism, circulating water piping, aeration piping and Controlling System.
Described reaction casing R is that the top is opened wide, and its base plate and sidewall are all the stainless material moulding.Reaction casing R vertically is divided into four reaction member U1～U4 by 3 stainless steel separator G.Each dividing plate G top correspondence has and is communicated with aperture K, piston S1～S4 sealing is adopted respectively on each reaction member top, piston S1～S4 top is connected with hydraulic drive mechanism J1～J4 respectively, piston S1～S4 is subjected to respectively J1～J4 to be controlled at each reaction member dividing plate G to be communicated with between K top, aperture and reaction member top and to move back and forth, and the circulating water main X of level and gas transmission main Q are separately positioned on reaction casing bottom outside.
in four reaction member U1～U4 of described reaction casing, each reaction member vertically arranges a spray header P1～P4, two plug-flow water pipe T1, T2～T7, T8, described spray header P1～P4 top correspondingly connects respectively with the spray transverse tube H1～H4 of spray apertures, the bottom of spray header P1～P4 is connected with circulating water main X through valve F7, F10, F13 and F16 respectively, sprays transverse tube H1～H4 higher than the top of connection aperture K but lower than the bottom of piston S1～S4, there is respectively level on the top of described vertically disposed plug-flow water pipe T1～T8 to tubaeform water outlet L1～L8 is set, L1～L8 is higher than the bottom that is communicated with aperture K but lower than the top of K, L1 wherein, L2, L4, L6 heavy caliber end to the right and L3, L5, L7, L8 heavy caliber end left, and L2 and L3, L4 and L5, L6 and L7 be staggered arrangement up and down, the bottom of plug-flow water pipe T1～T8 is respectively through valve F6, F8, F9, F11, F12, F14, F15, F17 is connected with circulating water main X, reaction member U1～U4 is communicated with circulating water main X through reaction box extracorporeal circulation water conduit tube X1～X4 by base plate center connecting hole C1～C4 respectively, origin or beginning at circulating water main X, end has respectively F1, F5, and be respectively equipped with valve F2, F3, F4 at the pipeline section of circulating water main X between adjacent reaction unit plug-flow water pipe T2 and T3, T4 and T5, T6 and T7.
Each reaction member U1～U4 bottom correspondence is provided with a micropore aeration pipe W1～W4, be fixed in each reaction member base plate by support, this micropore aeration pipe W1～W4 is connected with gas transmission main Q1～Q4 respectively and gas transmission main Q1～Q4 is connected with gas transmission main Q through valve F18～F21 respectively.
The controlled switching in reactor operational process of the present invention of above-mentioned all valves.
(2) reactor reaction of the present invention unit operational mode is as follows:
Described reaction member has main aeration and two kinds of operational modes of water cycle, rise in the first reaction member, each alternate reaction member and each adjacent reaction member move with different mode simultaneously by main aeration or water cycle respectively, and the controlled checker that carries out simultaneously between main aeration and these two kinds of different modes of water cycle moves.
When alternate reaction member U1 and U3 move under main aeration pattern, adjacent reaction unit U2 and U4 move under the water cycle pattern simultaneously, this moment, U1 and U3 carried out micro-pore aeration and plug-flow process simultaneously, U2 and U4 are carrying out tail gas aeration and water cycle process simultaneously, and this tail gas comes from U1 and U3 reaction member.As U1～when the U4 reaction member is in above-mentioned mode operation: (F1～F5) close is so that the water cycle of each reaction member, plug-flow process are relatively independent for all valves of circulating water main X; The valve (F7 and F13) of the spray header of U1 and U3 is closed simultaneously, and the valve (F18 and F20) of the valve of plug-flow water pipe (F6, F8, F12, F14) and gas transmission main is opened; And the valve of U2 and U4 spray header (F10 and F16) is opened, and the valve (F19 and F21) of the valve of plug-flow water pipe (F9, F11, F15, F17) and gas transmission main is closed.In addition, open hydraulic drive mechanism J1 and J3 and make it drive piston S1 and S3 in reaction member U1 and U3 to move downward to D/2 place, distance reaction member top (D is reaction member top and the spacing that is communicated with K top, aperture), and unlatching hydraulic drive mechanism J2 and J4 move downward to D/10 place, distance reaction member top piston S2 and S4 in its drive reaction member U2 and U4.The above air of this moment reaction member U1 and U3 water surface is compression state, and the above air of reaction member U2 and the U4 water surface is minute-pressure contracting state.as U1～when the U4 reaction member is in above-mentioned operational mode, the micro-pore aeration process Air of U1 and U3 blasts through the origin or beginning (left end) of air compressor machine from gas transmission main Q, and successively through gas transmission main Q, gas transmission main (Q1 and Q3) and micropore aeration pipe (W1 and W3), extrude by the micropore aperture of micropore aeration pipe (W1 and W3) at last and form a large amount of microbubbles and enter in reaction member U1 and U3 water body, due to the pressure-acting that is subjected to reaction member U1 and the above high compression air of the U3 water surface (this compressed-air actuated High Voltage is delivered to by the reaction member water surface and acts on microbubble surface formation strong pressure in water body), microbubble is rising in water body, and in the plug-flow process of U1 and U3 the water body in reaction member U1 and U3 successively through recirculated water main (X1 and X3), circulating water main X, plug-flow water pipe (T1, T2 and T5, T6) and the tubaeform water outlet (L1 of plug-flow, L2 and L5, L6), form plug-flow by the tubaeform water outlet end ejection of each plug-flow respectively at last, pressure-acting and above-mentioned plug-flow effect because being subject to the above high compression air of the reaction member water surface after the tail gas of the microbubble in U1 and U3 water body rises to reaction member top, its kinestate becomes the flat operation of throwing fast by low speed (speed is close to 0) vertical movement, and enter into adjacent reaction member U2 and U4 through the connection aperture K of dividing plate G, thereby the water body to U2 and U4 continues aeration, in the water cycle process of U2 and U4, the water body of reaction member U2 and U4 is successively through recirculated water main (X2 and X4), circulating water main X, spray header (P2 and P4), get back to from the spray apertures ejection of spray transverse tube (H2 and H4) at last and form water cycle reaction member, this water cycle process constantly repeats, and in the tail gas aeration process of U2 and U4, the tail gas of the microbubble of the above-mentioned U1 of coming from and U3 reaction member enters into after U2 and U4 immediately and to carry out from top to bottom together with water body with U2 and U4, iterative cycles from bottom to up, the carrying out of constantly repeating in this process liquid-gas interface mass transfer and strong gas-liquid turbulent fluctuation mass transfer fast.
As alternate reaction member U1 and U3 in operation under the water cycle pattern and adjacent reaction unit U2 and U4 when moving under main aeration pattern simultaneously, detailed process and above-mentioned alternate reaction member U1 and U3 in operation under main aeration pattern and while adjacent reaction unit U2 and U4 when moving under the water cycle pattern situation similar.
(3) reactor operational process of the present invention is as follows:
(1) water inlet process
Valve F1～F4 of ON cycle supply mains X closes the valve F5 of circulating water main X end and all valve F6～F17 of spray header and plug-flow water pipe, closes simultaneously all valve F18～F21 of gas transmission main.Origin or beginning (left end) from circulating water main X after pending sewage is pressurizeed by intake pump enters and injects each reaction member U1～U4 through each recirculated water main X1～X4 respectively by circulating water main X; when the water surface in each reaction member all reaches dividing plate G connection K top, aperture; the water inlet end of processing, intake pump is shut down and is no longer pumped into sewage in reactor.
(2) aeration process
Aerating step 1: this moment, alternate reaction member U1 and U3 moves under main aeration pattern and while adjacent reaction unit U2 and U4 move under the water cycle pattern, described in concrete steps such as reactor reaction of the present invention unit operational mode, aerating step 1 operation continuously stopped after 30 minutes, aerating step 2 beginnings.
Aerating step 2: this moment, alternate reaction member U1 and U3 moves under the water cycle pattern and while adjacent reaction unit U2 and U4 move under main aeration pattern, described in concrete steps such as reactor reaction of the present invention unit operational mode, aerating step 2 operation continuously stopped after 30 minutes, restarted aerating step 1.
The repetition aerating step 1～2 that whole aeration process goes round and begins again, aeration process total time is 12 hours.
After whole aeration process finishes, air compressor machine is shut down, and no longer blasts air in reactor.
(3) drainage procedure
After aeration process is completed, close the valve F1 of circulating water main X origin or beginning and all valve F6～F17 of spray header and plug-flow water pipe, valve F2～F5 of ON cycle supply mains X closes all valve F18～F21 of gas transmission main simultaneously.At this moment, after processing, aeration process reaches the water of emission standard in each reaction member U1～U4 by each recirculated water main (X1～X4) discharge through the end (right-hand member) of circulating water main X, (after the water of U1～U4) was emptied completely, drainage procedure finished until each reaction member.
So, go round and begin again and repeat above-mentioned water inlet process, aeration process, drainage procedure.
Claims (9)
1. efficient micro-pore aeration reactor that is used for sewage disposal, comprise reaction casing, piston, hydraulic drive mechanism, circulating water piping, aeration piping and Controlling System, it is characterized in that, circulating water piping is comprised of circulating water main, recirculated water main, spray header, plug-flow water pipe; The aeration piping is comprised of gas transmission main, gas transmission main and micropore aeration pipe; The reaction casing vertically cuts off by dividing plate and is a plurality of equal reaction members, and each reaction member open top is furnished with closed piston, has in each reaction member dividing plate top correspondence to be communicated with the aperture; In each reaction member, be vertically installed with respectively a spray header and two plug-flow water pipes, be horizontally disposed with a micropore aeration pipe, spray header is connected the bottom and is connected with circulating water main by valve respectively with the plug-flow water pipe; Each reaction member is communicated with circulating water main through reaction box extracorporeal circulation water conduit tube by base plate center connecting hole; Each micropore aeration pipe is communicated with gas transmission main by the gas transmission main respectively; Described reaction member has main aeration and two kinds of operational modes of water cycle, rise in the first reaction member, each alternate reaction member and each adjacent reaction member move with different mode simultaneously by main aeration or water cycle respectively, and the controlled checker that carries out simultaneously between main aeration and these two kinds of different modes of water cycle moves.
2. a kind of efficient micro-pore aeration reactor for sewage disposal according to claim 1, is characterized in that, the closed piston of each reaction member open top is connected with hydraulic drive mechanism respectively.
3. a kind of efficient micro-pore aeration reactor for sewage disposal according to claim 1, is characterized in that, origin or beginning, the end of circulating water main are respectively equipped with valve.
4. a kind of efficient micro-pore aeration reactor for sewage disposal according to claim 1, is characterized in that, the circulating water main pipeline section between adjacent reaction unit plug-flow water pipe is provided with valve.
5. a kind of efficient micro-pore aeration reactor for sewage disposal according to claim 1, is characterized in that, there is level on plug-flow water pipe top to tubaeform water outlet is set.
6. a kind of efficient micro-pore aeration reactor for sewage disposal according to claim 5, is characterized in that, the tubaeform water outlet on plug-flow water pipe top is communicated with the bottom, aperture higher than dividing plate, lower than this top, aperture.
7. a kind of efficient micro-pore aeration reactor for sewage disposal according to claim 1, is characterized in that, the spray header top is the spray transverse tube that is provided with spray apertures.
8. a kind of efficient micro-pore aeration reactor for sewage disposal according to claim 7, is characterized in that, the spray transverse tube on spray header top is communicated with the top, aperture higher than dividing plate, lower than piston base.
9. a kind of efficient micro-pore aeration reactor for sewage disposal according to claim 1, it is characterized in that, each reaction member micropore aeration pipe is fixed in each reaction member base plate by support, and the corresponding gas transmission main that connects of each micropore aeration pipe is connected with gas transmission main through valve.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4975197A (en) * | 1989-05-03 | 1990-12-04 | Envirex Inc. | Orbal wastewater treatment process |
| JPH07108295A (en) * | 1993-10-13 | 1995-04-25 | Shinichi Nakamura | Pressurized aeration treatment device for waste water |
| CN2603079Y (en) * | 2003-06-11 | 2004-02-11 | 长春工程学院 | Micropressure internal circulation active mud and waste water treatment device |
| CN200949073Y (en) * | 2006-08-22 | 2007-09-19 | 王建华 | Pressure regulating type highly effective biologic membrane sewage treatment equipment |
| CN201077794Y (en) * | 2007-06-04 | 2008-06-25 | 沈以东 | Novel biochemical reactor |
| CN203112576U (en) * | 2013-01-30 | 2013-08-07 | 武汉市政工程设计研究院有限责任公司 | High-efficient micropore aeration reactor for sewage treatment |
-
2013
- 2013-01-30 CN CN201310035912.8A patent/CN103102006B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4975197A (en) * | 1989-05-03 | 1990-12-04 | Envirex Inc. | Orbal wastewater treatment process |
| JPH07108295A (en) * | 1993-10-13 | 1995-04-25 | Shinichi Nakamura | Pressurized aeration treatment device for waste water |
| CN2603079Y (en) * | 2003-06-11 | 2004-02-11 | 长春工程学院 | Micropressure internal circulation active mud and waste water treatment device |
| CN200949073Y (en) * | 2006-08-22 | 2007-09-19 | 王建华 | Pressure regulating type highly effective biologic membrane sewage treatment equipment |
| CN201077794Y (en) * | 2007-06-04 | 2008-06-25 | 沈以东 | Novel biochemical reactor |
| CN203112576U (en) * | 2013-01-30 | 2013-08-07 | 武汉市政工程设计研究院有限责任公司 | High-efficient micropore aeration reactor for sewage treatment |
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